<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>时钟</title>
	<script type="text/javascript">
		window.onload = function() {
			// body...
			var oDiv = document.getElementById("div1");
			function timego(){
				var now = new Date();
				var year = now.getFullYear();
				var month = now.getMonth()+1;
	            var date = now.getDate();
	            var week = now.getDay();
	            var hour = now.getHours();
	            var minute = now.getMinutes();
	            var second = now.getSeconds();
	         	var str = '当前时间是：'+ year + '年'+month+'月'+date+'日 '+toweek(week)+' '+todou(hour)+':'+todou(minute)+':'+todou(second);
	            oDiv.innerHTML = str;
			}
			timego();
			setInterval(timego,1000);
		}
		function toweek(n){
	        if(n==0)
	        {
	            return '星期日';
	        }
	        else if(n==1)
	        {
	            return '星期一';
	        }
	        else if(n==2)
	        {
	            return '星期二';
	        }
	        else if(n==3)
	        {
	            return '星期三';
	        }
	        else if(n==4)
	        {
	            return '星期四';
	        }
	        else if(n==5)
	        {
	            return '星期五';
	        }
	        else
	        {
	            return '星期六';
	        }
	    }
		function todou(n){
	        if(n<10)
	        {
	            return '0'+n;
	        }
	        else
	        {
	            return n;
	        }
	    }
	</script>
</head>
<body>
	<div id="div1"></div>
</body>
</html>